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Publication numberUS4416273 A
Publication typeGrant
Application numberUS 06/273,662
Publication dateNov 22, 1983
Filing dateJun 15, 1981
Priority dateJun 15, 1981
Fee statusLapsed
Publication number06273662, 273662, US 4416273 A, US 4416273A, US-A-4416273, US4416273 A, US4416273A
InventorsJerry L. Grimes
Original AssigneeGrimes Jerry L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Connector valve assembly for endotracheal tubes
US 4416273 A
Abstract
A connector valve assembly for admission of catheters through endotracheal tubes employs a connector body having a tracheal tube port, a respiratory tube port and an end portion adapted for insertion of a catheter through the body and through the tracheal tube for patient airway suctioning. An end cap on the end portion has an aperture with a ring seal for sealably engaging the catheter as it is inserted therethrough and has a check valve disposed inwardly of the ring seal toward the respiratory and tracheal tube ports. The end cap defines an air lock chamber for insertion of the catheter through the connector body without interrupting positive pressure ventilation of the patient.
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Claims(2)
What is claimed and desired to secure by Letters Patent is:
1. A connector valve assembly for admission of catheters through endotracheal tubes comprising:
(a) a connector body having a tracheal tube port, a respiratory tube port and an open end portion for insertion of a catheter through said body and said tracheal tube;
(b) a valve means at said open end portion including a ring seal portion for sealably engaging said catheter and a check valve disposed inwardly of said ring seal portion toward said respiratory tube port and said tracheal tube port;
(c) wall means defining an air lock chamber between said ring seal portion and said check valve for insertion of a catheter without opening said connector body to the outside atmosphere;
(d) said wall means includes an end wall with said ring seal portion extending therethrough and a surrounding side wall having a lower skirt portion sized to fit over said open end portion;
(e) said open end portion having a shoulder; said skirt portion having an inwardly directed flange providing an inner shoulder to confront said shoulder; and
(f) a disc member having a peripheral edge captured between said shoulder and said inwardly directed flange and having portions providing a valve seat wherein said check valve has a flapper attached to said disc member and sealably engaging said valve seat.
2. The connector valve set forth in claim 1 wherein:
(a) said tracheal tube port and said respiratory tube port each have a sleeve fitted thereon for swiveling connection of said connector body with tracheal and respiratory tubes.
Description

This invention relates to medical tube connector devices and, in particular, to a connector assembly for endotracheal tubes utilizing a valve to limit air movement.

BACKGROUND OF THE INVENTION

During continuous mechanical ventilation of patients, a common clinical practice involves the use of positive end expiratory pressure (PEEP) wherein the ventilator provides a specific amount of pressure measured in centimeters of water pressure during the expiratory phase of ventilation. This "pressure breathing" tends to ventilate the entire lung system of the patient and to assist breathing of those with injuries or debilitating illnesses having labored or otherwise breathing difficulties. The slight positive pressure of the incoming air or gas to assist inhalation must be overcome during expiration and suitable valves and pressure regulators are emplaced in the ventilator to provide for expiration.

During positive end expiratory pressure breathing, it is desirable not to interrupt the established routine of breathing during ventilation; however, virtually all patients on mechanical ventilation systems require frequent suctioning of the airways and lung organs to maintain proper bronchial hygiene to prevent even more serious illnesses such as bronchial pneumonia.

Currently, when suctioning is required, the patient must be physically disconnected from the mechanical ventilation device because previous systems and connector devices have not permitted administering personnel to simultaneously maintain the pressurized system and suction through a catheter.

In another common clinical procedure, an examination instrument known as a bronchofiberscope is inserted through the connector assembly and through the tracheal tube for visual inspection of the patient's lungs and bronchial passages. This inspection is often hampered because the patient is on pressurized mechanical ventilation and disconnection from the ventilator is ordinarily required prior to insertion of the bronchofiberscope.

OBJECTS OF THE INVENTION

The objects of the present invention are; to provide a connector valve assembly for maintaining positive end expiratory pressure in patients connected to a positive pressure ventilation system; to provide such a connector valve assembly in which a catheter or other small diameter tubular device can be inserted through a connector body and tracheal tube without loss of air pressure therein; to provide a connector valve assembly having a valve means including a ring seal and a one-way check valve therein cooperating to seal the connector body yet admit catheters and the like; to provide such a connector valve assembly having an air lock chamber between a ring seal and a check valve to maintain positive pressure within the connector body and tracheal tube; to provide such a connector valve assembly having a cap arrangement connectable thereto and defining an air lock chamber with a ring seal at one end and a check valve at another end portion, said cap arrangement being readily connectable to standard connector bodies; and to provide such a connector valve assembly which is sturdy and reliable in use, contains few moving parts, and is inexpensive to manufacture.

Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings wherein are set forth, by way of illustration and example, certain embodiments of this invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side elevational view of the connector valve assembly shown joined to an endotracheal tube.

FIG. 2 is a disassembled, perspective view of the connector valve assembly.

FIG. 3 is a longitudinal sectional view taken along lines 3--3, FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

As required, a detailed embodiment of the present invention is disclosed herein, however, it is to be understood that the disclosed embodiment is merely exemplary of the invention which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as the basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.

Referring to the drawings in more detail:

The reference numeral 1 generally indicates a connector valve assembly for admission of catheters and the like through endotracheal tubes and having a connector body 2 with a tracheal tube port 3, a respiratory tube port 4 and an open end portion 5 for insertion of a catheter through the body 2 and through a tracheal tube 6.

A valve means 7 at the open end portion 5 opens and sealably engages the catheter and a check valve inwardly thereof opens to the valve body interior for insertion of the catheter into the body without opening the body to the outside atmosphere and causing loss of positive system pressure.

In the illustrated example, the connector body 2 is substantially standard in configuration and comprises an elongate, tubular member having an outer wall 9 and an inner wall 10 defining a through bore. The illustrated tracheal tube port 3 is situated at the bottom of the body 2 and has spaced upper and lower flanges 12 and 13 with the lower flange 13 having a sloping surface 14 for snap fitting of an engagement ring portion 15 of a swivel adaptor 16.

The tracheal tube coupling 18 has a lower insert end 19 and an upper reduction couple 20 insertable into the open end portion of the swivel adaptor 16. The exemplary reduction couple 20 may have an industry standard 15 mm. outside diameter with a one degree taper for a tight press fit.

The endotracheal tube 6 has an upper connection end 21 and a lower, gas outlet end 22 associated with an expansible bladder or cuff 23 which is inflatable by means of an air line 24.

The respiratory tube port 4 joins the connector body 2 at a substantially angular relationship and has a passage therethrough (not shown) communicating with the through bore of the body tube for administering a gas, such as air or oxygen, through the tracheal tube 6 and into the patient's lungs. The respiratory tube port 4 has an end flange 26 and may be plain or include a swivel connector 27.

The respiratory tube port 4 connects to a respiratory tube (not shown) which is in turn connected to a mechanical ventilator including an air or gas pump to provide a source of pressurized air for administration to a patient. This procedure, known as positive end expiratory pressure (PEEP) involves pressure breathing or reversal of ordinary breathing functions wherein the patient relaxes and the incoming pressurized air expands the diaphragm and causes the lungs to fill with the gas. Expiration is accomplished by positive contraction of the diaphragm sufficient to overcome the incoming air pressure and permit expiration. Normally the mechanical ventilating device (not shown) includes valves, regulators and the like.

Patients on mechanical ventilation normally require frequent airway suctioning as through a suction catheter 29 to maintain the proper bronchial hygiene. Alternatively, examining instruments such as a bronchofiberscope (not shown) may be passed down the airway for visual examination of the patient's airway and lungs. Both the catheter and bronchofiberscope are long, slender, tubular devices and are commonly inserted through the endotracheal tube connector and endotracheal tube 6 when emplaced. Particular problems are encountered with the positioning of the suction catheter 29 when the ventilation device provides pressurized air because entry of the catheter into the tube connector has heretofore caused positive pressure to be lost and the patient's blood oxygen supply to decrease drastically.

Using the present invention, positive system pressure is not lost upon the insertion of the catheter 29 or bronchofiberscope through the connector body 2 and into the tracheal tube 6. In the illustrated example, the valve means 7 is associated with a cap arrangement 30 having an end wall 31 and a surrounding side wall 32. The cap arrangement 30 has a lower section 33 joined thereto, also with a surrounding side wall 34 and having an inwardly directed flange providing an inner shoulder 35 which acts as a valve seat as described below. The side wall 34 forms a skirt sized to fit securely over the open end portion 5 and includes the valve means 7 as an assembly therewith. An end shoulder 36 confronts the inner shoulder 35 and a one-way check valve 38 is captured therebetween.

In the illustrated example, the check valve 38 has a disc member 39 with a peripheral edge 40 and a central aperture portion 41. A flexible, rubbery valve flapper 42 is secured at one portion to the disc member 39 and has a flapper periphery overlying a portion of the inner shoulder 35 when thereagainst, whereby the inner shoulder 35 acts as a valve seat for the flapper 42. The positioning of the check valve 38 permits the flapper 42 to swing open when the catheter 29 is routed through the connector body 2 and to swing closed to a sealed position immediately upon withdrawal of the catheter 29 and held against the valve seat by greater than atmospheric or positive pressure.

An aperture 45 extends axially through the end wall 31 and has a ring seal portion 46 formed therewith having an inside diameter sized for sealing engagement with the outside surface of the catheter 29. The ring seal portion 46 may be integral with the end wall 31 or may be a separate emplaced O-ring or the like suitably mounted within the end wall 31, as long as the ring seal portion 46 sealably engages the catheter wall and prevents loss of positive pressure air through the aperture 45. The side walls 32 and 33 generally define an air lock chamber for 48, FIG. 3, located between the first seal, the ring seal portion 46 and the second seal or check valve 38. A removable plug 49 comprises a shaft-mounted ball 50 with an encircling seal flange 51 and secured to an upper tab portion 52 joined to a tether 53 connected, as by molding, to end wall 31. The plug 49 is selectively insertable into the aperture 45 to close the air lock chamber 48 and removable therefrom to route the catheter 29 into the connector body 2.

In use, the plug 49 is removed and the end of the catheter 29 inserted through the aperture 45 with the ring seal portion 46 sealing therearound. The catheter 29 is pushed quickly through the air lock chamber 48 and the check valve 38 and into the connector body 2. The catheter 29, bronchofiberscope or other similar device is then manipulated as desired by the doctor or health specialist to perform the necessary suctioning, inspection or the like.

Upon completion of the suctioning or inspection, the catheter 29 is pulled outwardly of the tracheal tube 6 and connector body 2 whereupon the check valve 38 is no longer held open and the positive pressure within the connector body 2 administered by the mechanical ventilator pushes the flapper 42 to seal off the air lock member 48. The catheter 29 is then removed the remainder of the way through the aperture 45 and the plug 49 fitted thereto upon completion.

Throughout this entire procedure, the connector body 2 remains closed and no noticeable amount of air escapes to cause a drop in the positive pressure.

It is to be understood that while one form of this invention has been illustrated and described, it is not to be limited to the specific form or arrangement of the parts herein described and shown, except insofar as such limitations are included in the following claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2708927 *Nov 21, 1952May 24, 1955Continental Hospital Service IIncubator for infants
US3461877 *Mar 2, 1966Aug 19, 1969Morch Ernst TrierTracheostomy tube construction
US3902500 *Mar 1, 1974Sep 2, 1975Dryden Gale EEndotracheal catheter with means for positive ventilation and sterile technique
US4240417 *Jun 13, 1979Dec 23, 1980Holever Bernard KTracheal tube adapter for ventilating apparatus
FR1296652A * Title not available
FR2359615A1 * Title not available
GB2019219A * Title not available
Non-Patent Citations
Reference
1 *Article A--Unidentified Tracheal Tube Connector.
2 *Article B--Tracheal Tube Connector Marked "Portex".
3 *Article C--Tracheal Tube Connector Marked "Shirley Labs. Pat. Pending".
4 *Special New Low Resistance to Flow Tube and Endotracheal Tube Adapter for Use During Fiberoptic Bronchoscopy; Carden et al., Sep.-Oct., 1975, pp. 1-4.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4488548 *Dec 22, 1982Dec 18, 1984Sherwood Medical CompanyEndotracheal tube assembly
US4510933 *May 13, 1983Apr 16, 1985Dragerwerk AktiengesellschaftSuction adapter and medical draining set and method of using a tracheal draining device
US4552142 *May 10, 1984Nov 12, 1985Ohio Medical Research, Inc.Ventilator system having a control valve in the ventilator circuit
US4580556 *Apr 13, 1984Apr 8, 1986Kondur Prabhakar RFor use with an anesthesia mask
US4593690 *Jun 28, 1984Jun 10, 1986David S. SheridanEndotracheal tubes with improved proximal end connector units
US4631051 *Sep 24, 1984Dec 23, 1986Cordis CorporationVentricular amniotic shunt and introducer system
US4653477 *Sep 6, 1985Mar 31, 1987Olympus Optical Co., Ltd.Endoscope forceps stopcock
US4669463 *Jan 2, 1986Jun 2, 1987Mcconnell Richard BEndotracheal tube injection site addition
US4676241 *Jan 21, 1986Jun 30, 1987W.L.G. TechnologyVentilation tube swivel
US4715360 *Jan 7, 1987Dec 29, 1987Olympus Optical Co., Ltd.Fitted to an insertion mouthpiece for the insertion of medical instruments
US4759356 *Oct 3, 1986Jul 26, 1988David MuirTracheostomy device and related methods
US4762125 *Apr 27, 1987Aug 9, 1988The University Of Texas SystemFor removing secretions from endotrachael/tracheostomy tube
US4774940 *Jun 15, 1983Oct 4, 1988Linder Gerald SBreathing circuit connector for use in anesthesiology
US4850350 *Dec 15, 1986Jul 25, 1989Sheridan Catheter Corp.Closed system combined suction and ventilation devices
US4852564 *Sep 14, 1988Aug 1, 1989Sheridan Catheter Corp.Flexible connectors for medico-surgical tubes
US4863438 *Nov 29, 1985Sep 5, 1989Applied Medical Technology, Inc.Low profile gastrostomy device
US5062420 *Sep 18, 1990Nov 5, 1991Walter LevineSealed swivel for respiratory apparatus
US5088486 *Apr 11, 1990Feb 18, 1992Jinotti Walter JClosed system reusable dual purpose catheter
US5140983 *Aug 24, 1990Aug 25, 1992Jinotti Walter JMulti purpose catheter assembly
US5158569 *Dec 21, 1990Oct 27, 1992Ballard Medical ProductsCatheter placement locking and sealing device
US5163922 *Apr 29, 1991Nov 17, 1992Charles E. McElveen, Jr.Dual-valved connector for intravenous systems
US5165420 *Dec 21, 1990Nov 24, 1992Ballard Medical ProductsBronchoalveolar lavage catheter
US5199427 *Oct 18, 1991Apr 6, 1993Ballard Medical ProductsMulti-layered transtracheal caatheter
US5218957 *Oct 19, 1990Jun 15, 1993Ballard Medical ProductsMulti-layered transtracheal catheter
US5230332 *Oct 22, 1990Jul 27, 1993Ballard Medical ProductsMethods and apparatus for a micro-tracheal catheter hub assembly
US5246012 *Dec 19, 1991Sep 21, 1993Ballard Medical ProductsBronchoalveolar lavage catheter
US5263478 *Sep 9, 1992Nov 23, 1993Ballard Medical ProductsEndotracheal tube insertion and positioning apparatus
US5305762 *Sep 21, 1992Apr 26, 1994Medical Graphics CorporationPatient valve incorporating one-way check valves for infection control
US5325850 *Sep 30, 1992Jul 5, 1994Smith Industries Medical Systems, Inc.Suction catheter assemblies
US5333608 *Sep 30, 1992Aug 2, 1994Sherwood Medical CompanyEndotracheal tube for face, chin and neck surgery
US5336203 *May 28, 1993Aug 9, 1994Abbott LaboratoriesLow profile gastrostomy device with dome
US5360418 *Jul 15, 1992Nov 1, 1994Sherwood Medical CompanyConnector for a thoracic catheter
US5382242 *Aug 6, 1993Jan 17, 1995Mallinckrodt Medical, Inc.Capping device for conduit connector
US5392775 *Mar 22, 1994Feb 28, 1995Adkins, Jr.; Claude N.Duckbill valve for a tracheostomy tube that permits speech
US5411491 *May 28, 1993May 2, 1995Abbott LaboratoriesLow profile gastrostomy device with one-way cross-slit valve
US5460613 *Mar 14, 1994Oct 24, 1995Smiths Industries Medical Systems, Inc.For use in removing undesirable fluid from a patient
US5605149 *Mar 17, 1995Feb 25, 1997Board Of Regents, The University Of Texas SystemMethod and apparatus for directing air flow within an intubated patient
US5642726 *Apr 9, 1996Jul 1, 1997Alcove Medical, Inc.Reduced internal volume neonatal suction adaptor
US5662616 *Jul 7, 1995Sep 2, 1997Bousquet; Gerald G.Transcutaneous access device
US5683370 *Nov 21, 1996Nov 4, 1997Luther Medical Products, Inc.Hard tip over-the-needle catheter and method of manufacturing the same
US5694922 *Aug 19, 1994Dec 9, 1997Ballard Medical ProductsSwivel tube connections with hermetic seals
US5765557 *Mar 15, 1996Jun 16, 1998Board Of Regents, The University Of Texas SystemMethod and apparatus for directing air flow within an intubated patient
US5855568 *Nov 22, 1996Jan 5, 1999Liebel-Flarsheim CompanyAngiographic syringe and luer connector
US5913848 *Jun 6, 1996Jun 22, 1999Luther Medical Products, Inc.Hard tip over-the-needle catheter and method of manufacturing the same
US5916208 *Nov 21, 1996Jun 29, 1999Luther Medical Products, Inc.Hard tip over-the-needle catheter and method of manufacturing the same
US5957893 *Sep 8, 1998Sep 28, 1999Becton Dickinson & Co.Hard tip over-the needle catheter and method of manufacturing the same
US6099508 *Sep 21, 1998Aug 8, 2000Bousquet; Gerald G.Transcutaneous access device
US6155252 *Jun 15, 1998Dec 5, 2000Board Of Regents, The University Of Texas SystemMethod and apparatus for directing air flow within an intubated patient
US6484723 *Feb 11, 1999Nov 26, 2002Eileen HaasTracheostomy air filtration system
US6543446 *Nov 6, 2000Apr 8, 2003Evergreen Medical IncorporatedMethod and apparatus for ventilation/oxygenation during guided insertion of an endotracheal tube
US6579254 *Jun 19, 2000Jun 17, 2003Portex, Inc.Medication adapter and method for use thereof
US6634354Apr 23, 2001Oct 21, 2003Evergreen Medical IncorporatedLaryngeal mask airway
US6668821Jul 18, 2001Dec 30, 2003Evergreen Medical IncorporatedLaryngeal mask airway
US6698424Dec 21, 2001Mar 2, 2004Kimberly-Clark Worldwide, Inc.Medical connector for a respiratory assembly
US6895966Sep 29, 2003May 24, 2005Evergreen Medical IncorporatedLaryngeal mask airway
US7156827Apr 22, 2003Jan 2, 2007Smiths Medical Asd, Inc.Adapter for localized treatment through a tracheal tube and method for use thereof
US7191782May 6, 2003Mar 20, 2007Kimberly-Clark Worldwide, Inc.Respiratory suction catheter apparatus configured for releasable attachment with an artificial airway structure
US7263997May 6, 2003Sep 4, 2007Kimberly-Clark Worldwide, IncRespiratory apparatus having an instrument introduction section and manifold
US7273473Jan 30, 2004Sep 25, 2007Alcove Medical Inc.Sleeved catheter having insertion control mechanism
US7370653 *Dec 17, 2003May 13, 2008Intersurgical AgClosure devices for access ports of respiratory apparatuses
US7458955Jan 30, 2004Dec 2, 2008Owens Warren DCatheter having insertion control mechanism
US7556041May 6, 2003Jul 7, 2009Kimberly-Clark Worldwide, Inc.Respiratory apparatus having an introduction section configured for releasable attachment with a respiratory instrument
US7833194Nov 5, 2008Nov 16, 2010Carefusion 202, Inc.Catheter having insertion control mechanism
US8051856Jul 30, 2007Nov 8, 2011Passy-Muir, Inc.Tracheostomy valves and related methods
US8667966 *Aug 3, 2010Mar 11, 2014Hideo KoikeIntubating attachment and method
US8702596Sep 16, 2011Apr 22, 2014United States Endoscopy Group, Inc.Biopsy inlet valve improvements
US20120031399 *Aug 3, 2010Feb 9, 2012Hideo KoikeIntubating attachment and method
EP0712317A1 *Aug 5, 1994May 22, 1996Mallinckrodt Medical, Inc.Capping device for conduit connector
EP1430923A2 *Dec 18, 2003Jun 23, 2004Intersurgical LimitedClosure device
WO1986005102A1 *Feb 27, 1986Sep 12, 1986David A MuirTracheostomy device
Classifications
U.S. Classification128/207.16, 604/537, 128/912, 128/207.15
International ClassificationA61M16/04
Cooperative ClassificationY10S128/912, A61M16/0463
European ClassificationA61M16/04D
Legal Events
DateCodeEventDescription
Jan 30, 1996FPExpired due to failure to pay maintenance fee
Effective date: 19951122
Nov 19, 1995LAPSLapse for failure to pay maintenance fees
Jun 27, 1995REMIMaintenance fee reminder mailed
May 9, 1991FPAYFee payment
Year of fee payment: 8
Feb 17, 1987FPAYFee payment
Year of fee payment: 4